There are as far as I'm aware no PIDs in the rank of OCdt in TA Establishments. The rate you have quoted is for 2Lts and would be granted to you when you are appointed to a TA Gp A commission on completion of TACC.

Chnages to your rate of pay are actioned by SPVA on receipt of JPA Form L002 from your unit.

I have had the same argument with my RAO. However my reasoning is that if they expect you to do training to become an TA officer and adhere to the training set out by RMAS and do the training that our regular counterparts do they get paid as an officer so we should have the same pay and each regiment should have sufficient PID's to support us. The TA is crying out for officers and considering that this this is the first step it is appauling how we are treated!